From df220a217297e89a58593a0804e24c2b807fefba Mon Sep 17 00:00:00 2001
From: Krausus <vaeusx@gmail.com>
Date: Mon, 15 Jun 2015 09:44:53 -0400
Subject: [PATCH] Fixes deleted air alarm runtime

---
 code/game/machinery/alarm.dm | 1 +
 1 file changed, 1 insertion(+)

diff --git a/code/game/machinery/alarm.dm b/code/game/machinery/alarm.dm
index b1fcd04cd08..91eaa41821d 100644
--- a/code/game/machinery/alarm.dm
+++ b/code/game/machinery/alarm.dm
@@ -556,6 +556,7 @@
 
 /obj/machinery/alarm/proc/ui_air_status()
 	var/turf/location = get_turf(src)
+	if(!istype(location)) return
 	var/datum/gas_mixture/environment = location.return_air()
 	var/total = environment.oxygen + environment.carbon_dioxide + environment.toxins + environment.nitrogen
 	if(total==0)